Autoswitch Model AS5NB (BMW Only) Technical Support

Using a Headlight Modulator

This Autoswitch is triggered by the ground pulse from the Turn Signal Cancel button on BMW motorcycles 1992-2004 (Non CAN-BUS digital system) so there is no interaction at all between the headlight or high beam lights.

Using a Turn Signal Canceler

If using an aftermarket turn signal canceler that ALSO sends a negative or ground connection to the controller box, be sure the pulse is less than 1 second in length and it is a single pulse. This will avoid it telling the Autoswitch to activate your lights relay ON or OFF. Or activating the garage door opener.

Using Multiple Autoswitches on the Same Vehicle

The negative pulse models AS5NB, AS5NB2 and AS5NG2, and AS5NCY all use the turn signal cancel button on the BMW motorcycles. That button sends a negative pulse to the controller. (It grounds the wire).

Using the AS5NB the unit detects only the long pulse. The button release time is after 1.2 seconds but before 10 seconds. On the AS5NCY there is no 10 second time limit. But that unit's only for CycleGadget's special customers.

Then on the same vehicle, use an AS5NB2 or the garage model NG2. This type "sees" ONLY the 2 quick short tap pulses. These are just touch and release tpe and spaced within 1 second. This switch ignores the long pulse that only the other unit will "see", and vice versa.

The second switch is great for activating a second set of lights or a whole separate power panel doing other things. This writer set it up for separate control of blinding (to oncoming drivers even in daylight) Hella HID lamps. One was plenty for night time city while both would be on for rural solitary riding, creating my own daylight up ahead.

The above covers use of TWO switches on a BMW moto (pre CAN-BUS). To add another TWO Autoswitches for a total of 4, just use the high beam trigger for the AS5P (long pulse) and AS5P2 for the two quick pulses. This writer used the P2 on a new 1200GS via the tail light brake bulb. I do 2 quick touches the brake lever to activate the AS5P2. This is not a recommended activation method.

LED Indicator Light Information

This LED has a lens on top. The housing is a 5mm diameter, 7mm tall. There is a 1mm long flange at the bottom thats 6mm diameter. The wire underneath needs aproximately 20mm before a full bend can be made. This stiffness is only due to all the layers of protective heat shrink tubing. By modifying this area the bottom of the LED wire secion can be set up much smaller.

The LED is a bi-color. Red or Green. It changes color by getting the volatge on the feed wire reversed by the processor. When the LED is quickly pulsed the color appears orange to the eye. The wire is 6 to 7 feet long. It should never be cut or altered due to the danger of damaging the processor chip. If the wires are shorted when the Autoswitch is powered up, the processor chip will be instantly ruined.

Further tech info about converting the LED to be a bulb, or changing to a different LED entails custom work, info and configurations we do not have available at this time.

Additional Information

Authorized Dealers

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We welcome any questions you may have concerning our products as well as their use and installation. If you are contacting us concerning a problem with your installation please make sure you've followed the troubleshooting tips for your specific model prior to contacting us. Most installation issues can be resolved by following these tips. Contact Autoswitch.

Autoswitch available on ebay

Be sure to visit our ebay store for closeout prices on discontinued, retired and refurbished models.

What is Autoswitch?

AutoSwitch is an electronic circuit technically called a parasitic switch. This electronic circuit uses existing switches and circuits on the vehicle by just sensing their action or position. The Autoswitch can sense voltage variations/changes OR ground/chassis contact on its sense wire and act according to installer/user set up and program.

How does it work?

Autoswitch detects or senses on the trigger wire connected to the high beam wire, or a tail brake bulb wire or a turn signal cancel button, for example. The circuit then controls a high power relay (included with a light kit or widely available) by applying or removing 12 Volts to the relay. The relay then passes high power to any accessory such as driving lights. Any accessory with a power draw under 200mA (GPS, Cellphone charger, small LEDs lights) can be powered directly by Autoswitch.